Could you get it to master via a separate PR if that helps with the basic setWatch() stuff? It seems like quite some number of people are hitting this problem.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
In actual branch for ESP32 is a change in jshGetSystemTime() to fix problems with ESP32 internal time routine